I tested Bitcoin Beach Wallet (a direct apk file from https://github.com/GaloyMoney/galoy-mobile/releases) and there are ZAPs work! So the BBW supports NIP-57! It means that Salvadorians can use (and USA and EU citizens) this wallet for ZAPs (with ZAPs stats!). Cool!
Discussion
#[2] here is a bug or v0.24. The link above is normal but the Amethyst the symbol ')' attached to link. I think it's not correct
But by rfc3986 the symbol ')' is legal "reserved" character and can be part of URI. But many e-mail programs remove this symbol from the end of link, because often people put links in brackets. In general, this is not technically a bug. But from the user's point of view, it may not work correctly.
The correct link is: https://github.com/GaloyMoney/galoy-mobile/releases
But I found a bug there: you cannot send zap from BBW to user with a BBW Lightning Addresses.... https://github.com/GaloyMoney/galoy-mobile/issues/1344
My problem was that I was testing with myself and trying to send sats inside the same BBW wallet account. As it turned out, he does not allow this to be done, which is logical. Another BBW user can send sats to another BBW user without any problems.